With “Us” in theaters, audiences will now get to see just how scary Lupita Nyong’o can be.

In Jordan Peele’s sophomore feature film, Nyong’o plays both a “good” character and her doppelganger, for which she adopted a guttural, husky voice.

“I was inspired by the condition spasmodic dysphonia,” she told Variety at “Us'” Los Angeles premiere, “which is a condition that comes about from trauma, sometimes emotional, sometimes physical. It creates this spasming in your vocal cords that leads to an irregular flow of air.”

Watch above.